256621202116 has 24 divisors (see below), whose sum is σ = 450938093760. Its totient is φ = 127782132000.

The previous prime is 256621202107. The next prime is 256621202177. The reversal of 256621202116 is 611202126652.

256621202116 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698131 + ... + 2791621.

It is an arithmetic number, because the mean of its divisors is an integer number (18789087240).

Almost surely, 2^256621202116 is an apocalyptic number.

It is an amenable number.

256621202116 is a deficient number, since it is larger than the sum of its proper divisors (194316891644).

256621202116 is a wasteful number, since it uses less digits than its factorization.

256621202116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96315 (or 96313 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 256621202116 its reverse (611202126652), we get a palindrome (867823328768).

The spelling of 256621202116 in words is "two hundred fifty-six billion, six hundred twenty-one million, two hundred two thousand, one hundred sixteen".